powerpc/rtas: Only sleep in rtas_busy_delay if we have useful work to do

[deliverable/linux.git] / arch / powerpc / kernel / rtas.c

diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c
index 2097f2b3cba8df3e3ab6b582d19767b935da8157..f48446635c8945290e1c44db800250039ca999a3 100644 (file)
--- a/arch/powerpc/kernel/rtas.c
+++ b/arch/powerpc/kernel/rtas.c
@@ -494,7 +494,7 @@ unsigned int rtas_busy_delay(int status)
 
        might_sleep();
        ms = rtas_busy_delay_time(status);
-       if (ms)
+       if (ms && need_resched())
                msleep(ms);
 
        return ms;